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Framework/Util/LanguageUtil.cs

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+using System.Collections.Generic;
+using System.Globalization;
+
+namespace Kreta.Framework.Util
+{
+    /// <summary>
+    /// LCID alapján megmondja, hogy hanyadik indexű nyelv mezőt kell nézni.
+    /// </summary>
+    public class LanguageUtil
+    {
+        static Dictionary<string, int> m_LanguageIndexes = null;
+
+        private static LanguageUtil _instance;
+        public static LanguageUtil Instance
+        {
+            get
+            {
+                if (_instance == null)
+                {
+                    _instance = new LanguageUtil();
+                }
+
+                return _instance;
+            }
+        }
+
+        private LanguageUtil()
+        {
+            InitializeLanguageIndexes();
+        }
+
+        static void InitializeLanguageIndexes()
+        {
+            Dictionary<string, int> result = new Dictionary<string, int>();
+            using (SDA.DataProvider.SDAConnection connection = SDAServer.Instance.CreateConnection())
+            {
+                connection.Open();
+                using (SDA.DataProvider.SDACommand command = connection.CreateCommand())
+                {
+                    command.CommandText = @"select C_VALUE from T_SYSTEMPARAMETER where C_NAME = 'LANGUAGES'";
+                    string temp = command.ExecuteScalar() as string;
+                    if (temp != null)
+                    {
+                        string[] languages = temp.Split(',', ';');
+                        for (int index = 0; index < languages.Length; index++)
+                        {
+                            result[languages[index].Trim().ToLower()] = index;
+                        }
+                    }
+                }
+            }
+            m_LanguageIndexes = result;
+        }
+
+        public int GetLanguageIndex(int LCID)
+        {
+            var cultureInfo = new CultureInfo(LCID);
+
+            string key = cultureInfo.Name.ToLower().Substring(0, 2);
+            if (m_LanguageIndexes.TryGetValue(key, out int value))
+            {
+                return value;
+            }
+
+            if (!cultureInfo.IsNeutralCulture)
+            {
+                return GetLanguageIndex(cultureInfo.Parent.LCID);
+            }
+
+            return 0;
+        }
+
+    }
+}